Pelvic Rotation Is Associated With Asymmetry in the Knee Extensor Moment During Double-Leg Squatting After Anterior Cruciate Ligament Reconstruction
Pelvic Rotation Is Associated With Asymmetry in the Knee Extensor Moment During Double-Leg Squatting After Anterior Cruciate Ligament Reconstruction
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DOI：
10.1123/jab.2022-0204
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发表时间：
2023-02-01
影响因子：
1.4
通讯作者：
Tohyama, Harukazu
中科院分区：
文献类型：
--
作者：
Ishida, Tomoya;Samukawa, Mina;Tohyama, Harukazu
在前交叉韧带重建后，即使在恢复运动的康复计划完成后，也观察到双腿下蹲时膝伸肌力矩的不对称性。本研究旨在探讨前交叉韧带重建术后双下肢下蹲时膝伸肌力矩不对称与骨盆旋转角之间的关系。24名参与者进行双腿下蹲。采用2个测力板的三维运动分析系统，对下蹲过程中的动力学和运动学进行分析。膝伸肌力矩的肢体对称指数由骨盆旋转角预测（R2 = .376，P = .001）。此外，骨盆旋转和垂直地面反作用力的肢体对称指数独立地解释了膝伸肌力矩的肢体对称指数（R2 = 0.635，P<0.001，骨盆旋转β =-0.489，垂直地面反作用力β = 0.524）。骨盆向受累肢体的旋转与受累肢体的膝伸肌力矩比未受累肢体小相关。骨盆旋转的评估将是有用的，部分预测不对称的膝伸肌力矩在双腿蹲。减少骨盆旋转可以改善前交叉韧带重建术后双腿下蹲时膝伸肌力矩的不对称性。
Asymmetry in knee extensor moment during double-leg squatting was observed after anterior cruciate ligament reconstruction, even after the completion of the rehabilitation program for return to sports. The purpose of this study was to clarify the association between asymmetry in the knee extensor moment and pelvic rotation angle during double-leg squatting after anterior cruciate ligament reconstruction. Twenty-four participants performed double-leg squatting. Kinetics and kinematics during squatting were analyzed using a 3-dimensional motion analysis system with 2 force plates. The limb symmetry index of knee extensor moment was predicted by the pelvic rotation angle (R2 = .376, P = .001). In addition, the pelvic rotation and the limb symmetry index of the vertical ground reaction force independently explained the limb symmetry index of the knee extensor moment (R2 = .635, P< .001, beta of pelvic rotation = -0.489, beta of vertical ground reaction force = 0.524). Pelvic rotation toward the involved limb was associated with a smaller knee extensor moment in the involved limb than in the uninvolved limb. The assessment of pelvic rotation would be useful for partially predicting asymmetry in the knee extensor moment during double-leg squatting. Minimizing pelvic rotation may improve the asymmetry in the knee extensor moment during double-leg squatting after anterior cruciate ligament reconstruction.